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  1. 2001 - 2007 (GMT800) Non Powertrain
    I've got a coolant leak again. Its the same leak I've had before. I had the issue late last summer early fall. While the truck is running, it doesn't leak. But if I leave it sit off for a few hours after running for a bit, it leaks a few quarts out of the weep hole on the water pump. I had the...
  2. 01-04.5 LB7 Duramax Powertrain
    So my low coolant light came on today when I was driving back from work. Got home let it cool down then popped the cap of the reservoir. First off there was a fair amount of pressure still even though the truck had been sitting for over 2 hours. When I looked inside there was hardly any coolant...
  3. 04.5-05 LLY Duramax Powertrain
    So I just finished putting new head gaskets in my 2005 lly. 183k miles and bone stock up until I bought it. When I bought the truck it had typical HG symptoms... black tank, bubbling coolant at cold start with cap off, blowing coolant out when driving etc. So I decided to buy the truck for low...
  4. 01-04.5 LB7 Performance Parts Discussion
    So a while back I parked my 2003 2500hd CCLB after having a generous amount of oil come out of my crank case breather tube. I stopped driving it right there and then. Did an oil change and rather than the usual 2.5gal out came 5gallons of really, really thin oil. My first thought was fuel in the...
  5. 06-07 LBZ & LLY Duramax Powertrain
    Hey guys, I got a 06 lbz with 248k on it. I was daily driving it and i checked the oil every 2 days and it was perfect everytime. I started driving my lb7 everyday so the lbz sat for week but the other day i decided to take it for a trip and checked the oil and it read like 2 inches past the...
  6. 01-04.5 LB7 Duramax Powertrain
    Ok, My little brother has an 01 LB7 an blew a head gasket and his trans screwed up awhile back. So I am trying to help him out. I work for Pure Diesel Power and got him a head gasket set from Merchant Automotive, a set of ARP studs and a built transmission. I am starting the head gasket job this...
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